Iron sleeper



Nov. 23, 1937* v c. WALLMANN r AL 2,100Ql53 IRON SLEEPER Original Filed Jan. 28, 1932 In ventors:

a War a; 'grw lg ks ca Patented Nov. 23, 1937 IRON SLEEPER Carl Wallmann, Julius Grossweischede, and

Bernhard Kruse, Mulheim Ruhr, Germany, assignors to firm Vereinigte Stahlwerke Aktiengesellschaft, Dusseldorf, Germany Original application January 28, 1932, Serial No. 589,466, now Patent No. 2,023,827. Divided and this application December 17, 1934, Serial No. 757,940. In Germany February 10, 1931 1 Claim.

This invention relates to an iron double sleeper especially for use at rail joints of railroad tracks.

Two closely adjacent single sleepers have previously been usedfor rail joints, each sleeper supporting the end of one rail. Since the usual sleepers are trough-shaped, the inclination of the side faces of the sleepers has the drawback that the extreme ends of the rails are not substantially supported thereby and therefore the outermost rail-ends bend when a wheel rolls over the rail joint.

Since when using two single sleepers, a yielding of each sleeper on the road bed occurs, it has already been proposed to use a double-width sleeper instead of two single sleepers. The shape or form of the known double-width sleepers corresponds to the shape or form of two single sleepers and thedouble-width sleepers have a profile consistingof two trough-shaped halves which are united in the middle. This constructional form has the drawback that the adjacent rails are also not supported at their outermost ends and that when running over the rail joints, the outermost rail ends are bent downward.

The present invention eliminates these disadvantages by providing a double sleeper with railcontact parts which extend across the entire width of the sleeper so that the rail ends which rest upon said rail-contact parts have a complete support up to their joint. Preferably the double sleeper is provided at each rail-contact part with an integral thickened portion extending across the double sleeper and with at least two single groups of integral projections for engaging the rails. The thickened rail-contact part and the projections are preferably pressed out of the working material of the sleeper within a die, for example by the process described in our U. S. application Ser. No. 589,466, filed January 28, 1932, Patent No. 2,023,827, from which the present case is a division.

The present invention is more clearly described and illustrated by way of example in the accompanying drawing. In the drawing Fig. 1 is a cross-section of a substantially flat preliminary profile for producing the double sleeper according to the invention;

Fig. 2 is a side view according to Fig. 1;

Fig. 3 is a plan view according to Fig. 1;

Fig. 4 is a cross-section of another preliminary profile which is shaped somewhat like the final sleeper;

Fig. 5 is a side view according to Fig. 4;

Fig. 6 is a plan view according to Fig. 4;

Fig. '7 is a cross-section of a finished doublesleeper;

Fig. 8 is a side view according to Fig. 7;

Fig. 9 is a plan view according to Fig. 7.

In Figures 1 to 3 a rolled section iron is shown 5 which is preferably used for producing the double-sleeper according to the invention. The fiat preliminary workpiece has thickened parts 4 which extend in the longitudinal direction and contain the material required for forming the 0 rail positioning ribs and also for the reinforcement of the top of the sleeper, said reinforcement being provided in the rail seat.

In Figures 4 to 6 another preliminary work piece is shown which is also provided with thick- 15 ened parts 4 extending in the longitudinal direction for the formation of the rail positioning ribs and also for the reinforcement of the top of the sleeper in the rail seat.

In Figures 7 to 9, the double-sleeper according to the invention is shown. The production of the sleeper from the preliminary workpieces shown in Figures 1 to 6 is preferably efiected by pressure. When producing the sleepers, the thickened parts 4 extending in the longitudinal direction of the preliminary workpiece are depressed and remain only at the places where rail positioning or locating ribs are to be formed. The depressed material is used for widening the preliminary workpiece to the width of the finished sleeper. The depressed material at the rail-contact places is also used for reinforcing the top of the sleeper at these places.

The finished sleeper according to Figures 7 to 9 is provided at the places not used for the rail support with the same profile as the known double sleepers. The sleeper according to the invention has, however, a different shape at the rail supporting region and the recess dividing the double sleeper into two trough-shaped halves is not provided at that place but the top of the sleeper extends at these places across the entire width of the double sleeper in one plane. Consequently, surfaces 6 are provided which constitute rail contact surfaces and extend across the entire width of the double sleeper and are indicated by hatching in Figure 9. The rail locating and fastening ribs 5 are arranged laterally of the rail-contact surfaces 6.

The shaping of the double sleeper according to the invention has the result that the rail ends secured to the sleeper have a complete and substantial support up to the joint. A sagging of the outermost rail ends when running over the rail joint does not, therefore, occur when using 55 sponding in width to the width of a normal 1 double sleepers according to the inventionv and since the shock occurring when running over the A double width sleeper more particularly for joint connections of railroad track rails consisting of a body having a recess in the. medial portion thereof dividing said body into two troughshaped portions, each of said portions'corresleeper, said recess being interrupted at the rail contact points of the sleeper to provide a contact surface for the rails which extend across the en-.' tire width of the double sleeper the portions of said 'sleeper; at. the; rail contact. surfaces having a greater thickness than the tops of the trough-V shaped portions, and rail locating projections on said rail contact surfaces. 7 V 

